/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/XRTrackingSystemBase.h
Override this method if you need to customize theIXRLoadingScreenimplementation. It will be called fromGetLoadingScreen()if LoadingScreen is not valid
virtual [IXRLoadingScreen](API\Runtime\HeadMountedDisplay\IXRLoadingScreen) * CreateLoadingScreen()